EP 0219330 A2 19870422 - Nonabrasive magnetic recording tape.
Title (en)
Nonabrasive magnetic recording tape.
Title (de)
Nichtabrasives magnetisches Aufzeichnungsband.
Title (fr)
Bande non-abrasive d'enregistrement magnétique.
Publication
Application
Priority
US 78673585 A 19851011
Abstract (en)
Magnetic recording tape is suitable for data recording mechanisms equipped with brass or other soft heads when its magnetizable layer is based on ferromagnetic iron oxide particles and contains titanium dioxide or other soft head cleaning agent which has a hardness approximating or slightly exceeding that of the iron oxide. The magnetizable layer preferably is free from, but may also contain unusually small amounts of hard head cleaning agent such as alumina.
IPC 1-7
IPC 8 full level
C09D 5/23 (2006.01); C09D 7/12 (2006.01); G11B 5/708 (2006.01)
CPC (source: EP US)
G11B 5/708 (2013.01 - EP US); Y10S 428/90 (2013.01 - EP US); Y10T 428/24983 (2015.01 - EP US); Y10T 428/25 (2015.01 - EP US); Y10T 428/256 (2015.01 - EP US); Y10T 428/257 (2015.01 - EP US); Y10T 428/258 (2015.01 - EP US); Y10T 428/259 (2015.01 - EP US); Y10T 428/2982 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0219330 A2 19870422; EP 0219330 A3 19890215; EP 0219330 B1 19910828; BR 8603966 A 19871117; CA 1290199 C 19911008; DE 3681111 D1 19911002; JP S6289225 A 19870423; US 4778714 A 19881018
DOCDB simple family (application)
EP 86307874 A 19861010; BR 8603966 A 19860820; CA 513673 A 19860714; DE 3681111 T 19861010; JP 21369386 A 19860910; US 78673585 A 19851011